import re

from django.conf import settings
from django.contrib.auth.backends import ModelBackend
from apps.ausers.models import User
from meiduo_mall.settings.dev import logger

from utils.secret import SecretOauth

def get_user_by_account(account):

    try:
        if re.match(r'^1[345789]\d{9}$', account):

            user = User.objects.get(mobile=account)

        else:
            user = User.objects.get(username=account)
    except Exception as e:
        logger.error(e)
        return None
    else:
        return user


class UsernameMobileAuthBackend(ModelBackend):
    def authenticate(self, request, username=None, password=None, **kwargs):

        user = get_user_by_account(username)

        if user and user.check_password(password):
            return user


def generate_verify_email_url(user):
    #字典
    data_dict = {'user_id':user.id, 'email':user.email}
    #加密
    secret_token = SecretOauth().dumps(data_dict)
    #拼接url
    verify_url = settings.EMAIL_ACTIVE_URL + '?token=' + secret_token
    #返回
    return verify_url

